<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>Geo3D - ECHARTS-GL</title>
        <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
        <meta name="apple-mobile-web-app-capable" content="yes"> <!-- Fullscreen Landscape on iOS -->
        <link rel="stylesheet" href="./common.css">
    </head>
    <body>
        <div id="main"></div>
        <script src="../node_modules/echarts/dist/echarts.js"></script>
        <script src="../node_modules/echarts/map/js/world.js"></script>
        <script src="../dist/echarts-gl.js"></script>
        <script src="lib/jquery.min.js"></script>
        <script>
            var chart = echarts.init(document.getElementById('main'));

            $.getJSON('data/buildings.json', function (buildingsGeoJSON) {

                echarts.registerMap('buildings', buildingsGeoJSON);

                var regions = buildingsGeoJSON.features.map(function (feature) {
                    return {
                        name: feature.properties.name,
                        value: Math.random(),
                        height: Math.max(Math.sqrt(feature.properties.height), 0.1)
                    };
                });

                chart.setOption({
                    // visualMap: {
                    //     show: false,
                    //     min: 0.4,
                    //     max: 1,
                    //     inRange: {
                    //         colorLightness: [0.2, 1]
                    //     }
                    // },
                    series: [{
                        type: 'map3D',
                        map: 'buildings',
                        shading: 'realistic',
                        realisticMaterial: {
                            roughness: 0.6,
                            detailTexture: 'asset/woods.jpg',
                            textureTiling: 20
                        },
                        postEffect: {
                            enable: true,
                            bloom: {
                                enable: false
                            },
                            screenSpaceAmbientOcclusion: {
                                enable: true,
                                radius: 10,
                                intensity: 1.2
                            },
                            depthOfField: {
                                enable: false,
                                focalRange: 5,
                                fstop: 1,
                                blurRadius: 6
                            },
                            colorCorrection: {
                                lookupTexture: 'asset/crispwinter.png'
                            }
                        },
                        groundPlane: {
                            show: true
                        },
                        light: {
                            main: {
                                intensity: 2,
                                shadow: true,
                                shadowQuality: 'high',
                                alpha: 30
                            },
                            ambient: {
                                intensity: 0
                            },
                            ambientCubemap: {
                                texture: 'asset/canyon.hdr',
                                exposure: 2,
                                diffuseIntensity: 1,
                                specularIntensity: 1
                            }
                        },
                        viewControl: {
                            alpha: 80,
                            distance: 100
                        },

                        itemStyle: {
                            areaColor: '#aaa'
                            // borderColor: '#222',
                            // borderWidth: 1
                        },

                        label: {
                            textStyle: {
                                color: 'white'
                            }
                        },

                        silent: true,

                        instancing: true,

                        boxWidth: 200,
                        
                        regionHeight: 1,

                        data: regions
                    }]
                });

            });
            window.addEventListener('resize', function () {
                chart.resize();
            });
        </script>
    </body>
</html>